FBI releases chilling video of Navy Yard gunman before attack

Footage shows Aaron Alexis arriving to the Navy Yard and stalking the hallways with his gun in-hand

By Matthew DeLucaNBC News

WASHINGTON – Scary new video footage released by the FBI Wednesday shows Washington Navy Yard shooter Aaron Alexis in the moments before his deadly rampage, entering the facility in his car and stalking through hallways and staircases armed with a shotgun.

The shotgun carried by Alexis had messages etched into it including “End to the torment,” “Not what yall say” and “Better off this way,” the FBI said at a press conference on Wednesday.

Alexis, a former petty officer, died after a shootout with officers at the Naval Sea Systems Command headquarters. He killed 12 people and injured four more after he opened fire with a shotgun before law enforcement officers located him on the building’s third floor and put an end to the shooting, according to officials.